Rotary oven.



No. 896,895. lATENTED AUG. 18, 1908. W. KOSIOKY, DEGD.

E. KOSIGKY, ADMINISTRATRIX.

ROTARY OVEN.

APPLICATION FILED FBB.13, 1907.

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No- 896,395. PATENTED AUG. 18, 1908.

' W. KOSIGKY, DEGD. v

E. KOSIOKY, ADMINISTRATRIX ROTARY OVEN.

APPLICATION FILED 33.13, 1907.

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No. 896,395. PATENTED AUG. 18, I908,

. A W. KOSIGKY, DEOD.

E. KOSICKY, ADMINISTRATRIX.

ROTARY OVEN.

PL OATION FILED PE .1 1 o AP I B 9 7 SSHEETS-SHEET a.

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WITNESSES INYEN TOR UNITED STATES PATENT OFFICE.

ELIZABETH KOSICKY, OF DETROIT, MICHIGAN, ADMINISTRATRIX OF WILLIAMKOSIOKY,'v

DECEASED, ASSIGNOR TO JOHN A. RICHARD, OF DETROIT, MICHIGAN.

ROTARY OVEN.

To all whom it may concern:

Be it known that I, ELIZABETH KosIoKY, a citizen of the United States,residing at Detroit, in the county of WVayne and State of Michigan,administratrix of the estate of NILLIAM KosIoKY, late a citizen of theUnited States, deceased, declare that said WILLIAM KOSICKY, deceased,did invent certain new and useful Improvements in Rotary Ovens, of whichthe following is a specification.

This invention relates to rotary ovens, and consists in the constructionand arrangement of parts hereinafter fully set forth and pointed outparticularly in the claims.

The object of the invention is to provide an oven of the characterdescribed, of simple and inexpensive construction, wherein thearrangement is such as to effect economy in the use of fuel, maintain auniform even heat and insure an easy rotation of the oven bed.

The above object is attained by the structure illustrated in theaccompanying drawing, in which Figure 1 is a transverse section throughan oven involving this invention. Fig. 2 is a horizontal section throughthe baking chamber as on line 22 of Fig. Fig. 3 is an enlargedfragmentary detail in section, showing the manner of securing the radialarms supporting the bed of the oven in the hub on the vertical rotaryshaft. Fig. 4 is a plan view of the hub and shaft. Fig. 5 is afragmentary view in plan of three of the radial arms which carry thesoap stones of which the bed .of the oven is formed. Fig. 6 is ahorizontal section through the lower flues, as on line 66 of Fig. 1.Fig. 7 is a like section through the upper return flues, as on line 77of Fig. 1.

Referring to the characters of reference, 1 designates the brick work ofthe oven which surrounds and incloses the circular baking chamber 2.Below the baking chamber are the lower return flues 3 which lead fromthe furnace 3 and communicate, through the vertical flues 3 with theupper return flues 4 above the baking chamber, which lead to' the stack4 as shown by dotted lines in Fig. 1.

It will be seen on referring to Fig. 1 that the arches of the lowerflues are close to the under side of the rotary oven bed which islocated in the baking chamber,'thereby presenting the heat more directlyto the under side of the oven bed and obviating the ne- Specification ofLetters Patent.

Application filed February 13, 1907.

Patented Aug. 18, 1908.

Serial No. 357,191.

cessity of heating an extensive space of dead air between the arches ofthe lower flues and the bottom of the oven, as is common in most rotaryovens, effecting material economy in heat.

The bed of the oven comprises soap stone segments 5 which are mountedupon radial arms 6, set between the upper and lowerhub pieces 7 and 8which are mounted upon and made fast to the vertical shaft 9. This shaft9 is supported at its upper end in the brick work of the oven, and itslower end is provided with a steel bearing pin 10 secured by set screws11 in a socket in the end of said shaft, said pin entering a conicalrecess in the case hardened bearing plate 12 which is supported in thecentral space 13 between the lower flues 3, the shaft 9 passing througha covering plate 14 which keeps the heat from said bearing. Thisarrangement enables the bearing pin when worn out, to be removed and anew pin substituted.

The arms 6 enter the space 15 between the hub pieces, their inner endsbeing tapered, as at 16, and there being upon their lower edge ashoulder 17 which engages the edge of the lower hub to regulate thedistance which said arms may enter between the hub members. Passingthrough and threaded in the upper hub member are the set screws 18.There is one of these set screws for each of the arms 6, adapted toenter a recess 19 in the upper edge thereof near its inner end. By meansof said set screws, the arms may be adjusted so as to bring the outerends into the same horizontal plane, and thereby more perfectly supportthe soap-stone segments 5 which constitute the floor or bed of the oven.To brace the arms laterally, they are connected by the transversechannel bars 20.

The upper and lower hub members 7 and 8 are made in two parts tofacilitate their attachment to the shaft 9 and for the purpose ofspacing the hub members the proper distance apart to receive the innerends of the arms 6, the shaft is provided with an upper peripheralgroove 21 and a lower peripheral groove 22. The wall of the centralopening 23 through each of the two-part hub members which embraces thevertical shaft, is provided with the segmental ribs or flanges 24adapted to enter the preipheral groove in the shaft to support the hubmembers in the proper vertical position, the parts of the hub membersbeing confined in place by the binding bolts 25 which pass transverselythrough the projecting ears 26 on said parts.

Surrounding the upper hub members 7 is an annular flange 27 whichprevents the goods being baked from getting off the soapstone onto theiron hub;

In order to rotate the iron bed easily and at a slow uniform speed,there is employed a circular rack 28 made up of segments secured to theunder side of the outer ends of the arms 6, by means of bolts 29 passingthrough the projecting ears on said segments, as shown by dotted linesin Fig. 5. Meshing with said rack is a pinion 30 mounted upon the innerend of a shaft 31 journaled in the wall of the oven and carrying uponits outer end a belt pulley 32. By rotating the shaft 31, the oven bedwill be caused to revolve slowly, thereby causing the material beingbaked to travel in a circle within the baking chamber, so that, shouldthe heat be more intense in one spot than another, the material is notexcessively'baked at that point.

To provide for oiling the bearing at the lower end of the shaft 9, anoil tube 33 (see Fig: 2) is passed through the wall of the oven anddirected to said bearing through which it may be lubricated.

Having thus fully set forth this invention, what is claimed is 1. Arotary oven, comprising a shallow baking chamber, upper and lower fireflues on opposite sides of said chamber, a central vertical shaft, upperand lower hub members mounted on said shaft, a plurality of radial armsextending in a horizontal plane and supported wholly at their inner endsbe tween the hub members on said shaft, an oven bed carried by saidarms, means for adjusting said arms vertically to level the oven bed,acircular rack connecting the outer ends of said arms and a rotary shafthaving a pinion engaging said rack.

2. A rotary oven, comprising a baking chamber, a shaft passingvertically through said chamber, upper and lower hub members mounted onthe shaft, radial arms supporting the bed of the oven, said arms havingtheir inner ends confined between the hub members and supported Whollythereby, and means carried by one of the hub members engaging the innerends of said arms to tilt them on the lower hub member and effect a theoven bed, the inner ends of said arms being confined between said hubmembers and supported wholly thereby, means carried by the hub membersfor adjusting the inner ends of the arms vertically, and a rack andpinion for rotating the oven bed i In testimony whereof I s1gn thisspeolficatron 1n the presence of two witnesses.

ELIZABETH KOSIOKY,

Admt'mstmtrir of the estate of lltlliam K0;

sieky, deceased. Witnesses:

JOHN A. RICHARD, O. B. BAENZIGER.

